1 files changed, 0 insertions, 501 deletions

diff --git a/drivers/staging/ipack/ipack.c b/drivers/staging/ipack/ipack.c
deleted file mode 100644
index d1e0651592a2..000000000000
--- a/drivers/staging/ipack/ipack.c
+++ /dev/null
@@ -1,501 +0,0 @@
-/*
- * Industry-pack bus support functions.
- *
- * (C) 2011 Samuel Iglesias Gonsalvez <siglesia@cern.ch>, CERN
- * (C) 2012 Samuel Iglesias Gonsalvez <siglesias@igalia.com>, Igalia
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the Free
- * Software Foundation; version 2 of the License.
- */
-
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/idr.h>
-#include <asm/io.h>
-#include "ipack.h"
-
-#define to_ipack_dev(device) container_of(device, struct ipack_device, dev)
-#define to_ipack_driver(drv) container_of(drv, struct ipack_driver, driver)
-
-static DEFINE_IDA(ipack_ida);
-
-static void ipack_device_release(struct device *dev)
-{
-	struct ipack_device *device = to_ipack_dev(dev);
-	kfree(device->id);
-	kfree(device);
-}
-
-static inline const struct ipack_device_id *
-ipack_match_one_device(const struct ipack_device_id *id,
-		       const struct ipack_device *device)
-{
-	if ((id->format == IPACK_ANY_FORMAT ||
-				id->format == device->id_format) &&
-	    (id->vendor == IPACK_ANY_ID || id->vendor == device->id_vendor) &&
-	    (id->device == IPACK_ANY_ID || id->device == device->id_device))
-		return id;
-	return NULL;
-}
-
-static const struct ipack_device_id *
-ipack_match_id(const struct ipack_device_id *ids, struct ipack_device *idev)
-{
-	if (ids) {
-		while (ids->vendor || ids->device) {
-			if (ipack_match_one_device(ids, idev))
-				return ids;
-			ids++;
-		}
-	}
-	return NULL;
-}
-
-static int ipack_bus_match(struct device *dev, struct device_driver *drv)
-{
-	struct ipack_device *idev = to_ipack_dev(dev);
-	struct ipack_driver *idrv = to_ipack_driver(drv);
-	const struct ipack_device_id *found_id;
-
-	found_id = ipack_match_id(idrv->id_table, idev);
-	return found_id ? 1 : 0;
-}
-
-static int ipack_bus_probe(struct device *device)
-{
-	struct ipack_device *dev = to_ipack_dev(device);
-	struct ipack_driver *drv = to_ipack_driver(device->driver);
-
-	if (!drv->ops->probe)
-		return -EINVAL;
-
-	return drv->ops->probe(dev);
-}
-
-static int ipack_bus_remove(struct device *device)
-{
-	struct ipack_device *dev = to_ipack_dev(device);
-	struct ipack_driver *drv = to_ipack_driver(device->driver);
-
-	if (!drv->ops->remove)
-		return -EINVAL;
-
-	drv->ops->remove(dev);
-	return 0;
-}
-
-#ifdef CONFIG_HOTPLUG
-
-static int ipack_uevent(struct device *dev, struct kobj_uevent_env *env)
-{
-	struct ipack_device *idev;
-
-	if (!dev)
-		return -ENODEV;
-
-	idev = to_ipack_dev(dev);
-
-	if (add_uevent_var(env,
-			   "MODALIAS=ipack:f%02Xv%08Xd%08X", idev->id_format,
-			   idev->id_vendor, idev->id_device))
-		return -ENOMEM;
-
-	return 0;
-}
-
-#else /* !CONFIG_HOTPLUG */
-
-#define ipack_uevent NULL
-
-#endif /* !CONFIG_HOTPLUG */
-
-#define ipack_device_attr(field, format_string)				\
-static ssize_t								\
-field##_show(struct device *dev, struct device_attribute *attr,		\
-		char *buf)						\
-{									\
-	struct ipack_device *idev = to_ipack_dev(dev);			\
-	return sprintf(buf, format_string, idev->field);		\
-}
-
-static ssize_t id_show(struct device *dev,
-		       struct device_attribute *attr, char *buf)
-{
-	unsigned int i, c, l, s;
-	struct ipack_device *idev = to_ipack_dev(dev);
-
-
-	switch (idev->id_format) {
-	case IPACK_ID_VERSION_1:
-		l = 0x7; s = 1; break;
-	case IPACK_ID_VERSION_2:
-		l = 0xf; s = 2; break;
-	default:
-		return -EIO;
-	}
-	c = 0;
-	for (i = 0; i < idev->id_avail; i++) {
-		if (i > 0) {
-			if ((i & l) == 0)
-				buf[c++] = '\n';
-			else if ((i & s) == 0)
-				buf[c++] = ' ';
-		}
-		sprintf(&buf[c], "%02x", idev->id[i]);
-		c += 2;
-	}
-	buf[c++] = '\n';
-	return c;
-}
-
-static ssize_t
-id_vendor_show(struct device *dev, struct device_attribute *attr, char *buf)
-{
-	struct ipack_device *idev = to_ipack_dev(dev);
-	switch (idev->id_format) {
-	case IPACK_ID_VERSION_1:
-		return sprintf(buf, "0x%02x\n", idev->id_vendor);
-	case IPACK_ID_VERSION_2:
-		return sprintf(buf, "0x%06x\n", idev->id_vendor);
-	default:
-		return -EIO;
-	}
-}
-
-static ssize_t
-id_device_show(struct device *dev, struct device_attribute *attr, char *buf)
-{
-	struct ipack_device *idev = to_ipack_dev(dev);
-	switch (idev->id_format) {
-	case IPACK_ID_VERSION_1:
-		return sprintf(buf, "0x%02x\n", idev->id_device);
-	case IPACK_ID_VERSION_2:
-		return sprintf(buf, "0x%04x\n", idev->id_device);
-	default:
-		return -EIO;
-	}
-}
-
-static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
-			     char *buf)
-{
-	struct ipack_device *idev = to_ipack_dev(dev);
-
-	return sprintf(buf, "ipac:f%02Xv%08Xd%08X", idev->id_format,
-		       idev->id_vendor, idev->id_device);
-}
-
-ipack_device_attr(id_format, "0x%hhu\n");
-
-static struct device_attribute ipack_dev_attrs[] = {
-	__ATTR_RO(id),
-	__ATTR_RO(id_device),
-	__ATTR_RO(id_format),
-	__ATTR_RO(id_vendor),
-	__ATTR_RO(modalias),
-};
-
-static struct bus_type ipack_bus_type = {
-	.name      = "ipack",
-	.probe     = ipack_bus_probe,
-	.match     = ipack_bus_match,
-	.remove    = ipack_bus_remove,
-	.dev_attrs = ipack_dev_attrs,
-	.uevent	   = ipack_uevent,
-};
-
-struct ipack_bus_device *ipack_bus_register(struct device *parent, int slots,
-					    const struct ipack_bus_ops *ops)
-{
-	int bus_nr;
-	struct ipack_bus_device *bus;
-
-	bus = kzalloc(sizeof(struct ipack_bus_device), GFP_KERNEL);
-	if (!bus)
-		return NULL;
-
-	bus_nr = ida_simple_get(&ipack_ida, 0, 0, GFP_KERNEL);
-	if (bus_nr < 0) {
-		kfree(bus);
-		return NULL;
-	}
-
-	bus->bus_nr = bus_nr;
-	bus->parent = parent;
-	bus->slots = slots;
-	bus->ops = ops;
-	return bus;
-}
-EXPORT_SYMBOL_GPL(ipack_bus_register);
-
-static int ipack_unregister_bus_member(struct device *dev, void *data)
-{
-	struct ipack_device *idev = to_ipack_dev(dev);
-	struct ipack_bus_device *bus = data;
-
-	if (idev->bus_nr == bus->bus_nr)
-		ipack_device_unregister(idev);
-
-	return 1;
-}
-
-int ipack_bus_unregister(struct ipack_bus_device *bus)
-{
-	bus_for_each_dev(&ipack_bus_type, NULL, bus, ipack_unregister_bus_member);
-	ida_simple_remove(&ipack_ida, bus->bus_nr);
-	kfree(bus);
-	return 0;
-}
-EXPORT_SYMBOL_GPL(ipack_bus_unregister);
-
-int ipack_driver_register(struct ipack_driver *edrv, struct module *owner,
-			  const char *name)
-{
-	edrv->driver.owner = owner;
-	edrv->driver.name = name;
-	edrv->driver.bus = &ipack_bus_type;
-	return driver_register(&edrv->driver);
-}
-EXPORT_SYMBOL_GPL(ipack_driver_register);
-
-void ipack_driver_unregister(struct ipack_driver *edrv)
-{
-	driver_unregister(&edrv->driver);
-}
-EXPORT_SYMBOL_GPL(ipack_driver_unregister);
-
-static u16 ipack_crc_byte(u16 crc, u8 c)
-{
-	int i;
-
-	crc ^= c << 8;
-	for (i = 0; i < 8; i++)
-		crc = (crc << 1) ^ ((crc & 0x8000) ? 0x1021 : 0);
-	return crc;
-}
-
-/*
- * The algorithm in lib/crc-ccitt.c does not seem to apply since it uses the
- * opposite bit ordering.
- */
-static u8 ipack_calc_crc1(struct ipack_device *dev)
-{
-	u8 c;
-	u16 crc;
-	unsigned int i;
-
-	crc = 0xffff;
-	for (i = 0; i < dev->id_avail; i++) {
-		c = (i != 11) ? dev->id[i] : 0;
-		crc = ipack_crc_byte(crc, c);
-	}
-	crc = ~crc;
-	return crc & 0xff;
-}
-
-static u16 ipack_calc_crc2(struct ipack_device *dev)
-{
-	u8 c;
-	u16 crc;
-	unsigned int i;
-
-	crc = 0xffff;
-	for (i = 0; i < dev->id_avail; i++) {
-		c = ((i != 0x18) && (i != 0x19)) ? dev->id[i] : 0;
-		crc = ipack_crc_byte(crc, c);
-	}
-	crc = ~crc;
-	return crc;
-}
-
-static void ipack_parse_id1(struct ipack_device *dev)
-{
-	u8 *id = dev->id;
-	u8 crc;
-
-	dev->id_vendor = id[4];
-	dev->id_device = id[5];
-	dev->speed_8mhz = 1;
-	dev->speed_32mhz = (id[7] == 'H');
-	crc = ipack_calc_crc1(dev);
-	dev->id_crc_correct = (crc == id[11]);
-	if (!dev->id_crc_correct) {
-		dev_warn(&dev->dev, "ID CRC invalid found 0x%x, expected 0x%x.\n",
-				id[11], crc);
-	}
-}
-
-static void ipack_parse_id2(struct ipack_device *dev)
-{
-	__be16 *id = (__be16 *) dev->id;
-	u16 flags, crc;
-
-	dev->id_vendor = ((be16_to_cpu(id[3]) & 0xff) << 16)
-			 + be16_to_cpu(id[4]);
-	dev->id_device = be16_to_cpu(id[5]);
-	flags = be16_to_cpu(id[10]);
-	dev->speed_8mhz = !!(flags & 2);
-	dev->speed_32mhz = !!(flags & 4);
-	crc = ipack_calc_crc2(dev);
-	dev->id_crc_correct = (crc == be16_to_cpu(id[12]));
-	if (!dev->id_crc_correct) {
-		dev_warn(&dev->dev, "ID CRC invalid found 0x%x, expected 0x%x.\n",
-				id[11], crc);
-	}
-}
-
-static int ipack_device_read_id(struct ipack_device *dev)
-{
-	u8 __iomem *idmem;
-	int i;
-	int ret = 0;
-
-	ret = dev->bus->ops->map_space(dev, 0, IPACK_ID_SPACE);
-	if (ret) {
-		dev_err(&dev->dev, "error mapping memory\n");
-		return ret;
-	}
-	idmem = dev->id_space.address;
-
-	/* Determine ID PROM Data Format.  If we find the ids "IPAC" or "IPAH"
-	 * we are dealing with a IndustryPack  format 1 device.  If we detect
-	 * "VITA4 " (16 bit big endian formatted) we are dealing with a
-	 * IndustryPack format 2 device */
-	if ((ioread8(idmem + 1) == 'I') &&
-			(ioread8(idmem + 3) == 'P') &&
-			(ioread8(idmem + 5) == 'A') &&
-			((ioread8(idmem + 7) == 'C') ||
-			 (ioread8(idmem + 7) == 'H'))) {
-		dev->id_format = IPACK_ID_VERSION_1;
-		dev->id_avail = ioread8(idmem + 0x15);
-		if ((dev->id_avail < 0x0c) || (dev->id_avail > 0x40)) {
-			dev_warn(&dev->dev, "invalid id size");
-			dev->id_avail = 0x0c;
-		}
-	} else if ((ioread8(idmem + 0) == 'I') &&
-			(ioread8(idmem + 1) == 'V') &&
-			(ioread8(idmem + 2) == 'A') &&
-			(ioread8(idmem + 3) == 'T') &&
-			(ioread8(idmem + 4) == ' ') &&
-			(ioread8(idmem + 5) == '4')) {
-		dev->id_format = IPACK_ID_VERSION_2;
-		dev->id_avail = ioread16be(idmem + 0x16);
-		if ((dev->id_avail < 0x1a) || (dev->id_avail > 0x40)) {
-			dev_warn(&dev->dev, "invalid id size");
-			dev->id_avail = 0x1a;
-		}
-	} else {
-		dev->id_format = IPACK_ID_VERSION_INVALID;
-		dev->id_avail = 0;
-	}
-
-	if (!dev->id_avail) {
-		ret = -ENODEV;
-		goto out;
-	}
-
-	/* Obtain the amount of memory required to store a copy of the complete
-	 * ID ROM contents */
-	dev->id = kmalloc(dev->id_avail, GFP_KERNEL);
-	if (!dev->id) {
-		dev_err(&dev->dev, "dev->id alloc failed.\n");
-		ret = -ENOMEM;
-		goto out;
-	}
-	for (i = 0; i < dev->id_avail; i++) {
-		if (dev->id_format == IPACK_ID_VERSION_1)
-			dev->id[i] = ioread8(idmem + (i << 1) + 1);
-		else
-			dev->id[i] = ioread8(idmem + i);
-	}
-
-	/* now we can finally work with the copy */
-	switch (dev->id_format) {
-	case IPACK_ID_VERSION_1:
-		ipack_parse_id1(dev);
-		break;
-	case IPACK_ID_VERSION_2:
-		ipack_parse_id2(dev);
-		break;
-	}
-
-out:
-	dev->bus->ops->unmap_space(dev, IPACK_ID_SPACE);
-
-	return ret;
-}
-
-struct ipack_device *ipack_device_register(struct ipack_bus_device *bus,
-					   int slot)
-{
-	int ret;
-	struct ipack_device *dev;
-
-	dev = kzalloc(sizeof(struct ipack_device), GFP_KERNEL);
-	if (!dev)
-		return NULL;
-
-	dev->dev.bus = &ipack_bus_type;
-	dev->dev.release = ipack_device_release;
-	dev->dev.parent = bus->parent;
-	dev->slot = slot;
-	dev->bus_nr = bus->bus_nr;
-	dev->bus = bus;
-	dev_set_name(&dev->dev,
-		     "ipack-dev.%u.%u", dev->bus_nr, dev->slot);
-
-	if (bus->ops->set_clockrate(dev, 8))
-		dev_warn(&dev->dev, "failed to switch to 8 MHz operation for reading of device ID.\n");
-	if (bus->ops->reset_timeout(dev))
-		dev_warn(&dev->dev, "failed to reset potential timeout.");
-
-	ret = ipack_device_read_id(dev);
-	if (ret < 0) {
-		dev_err(&dev->dev, "error reading device id section.\n");
-		kfree(dev);
-		return NULL;
-	}
-
-	/* if the device supports 32 MHz operation, use it. */
-	if (dev->speed_32mhz) {
-		ret = bus->ops->set_clockrate(dev, 32);
-		if (ret < 0)
-			dev_err(&dev->dev, "failed to switch to 32 MHz operation.\n");
-	}
-
-	ret = device_register(&dev->dev);
-	if (ret < 0) {
-		kfree(dev->id);
-		kfree(dev);
-		return NULL;
-	}
-
-	return dev;
-}
-EXPORT_SYMBOL_GPL(ipack_device_register);
-
-void ipack_device_unregister(struct ipack_device *dev)
-{
-	device_unregister(&dev->dev);
-}
-EXPORT_SYMBOL_GPL(ipack_device_unregister);
-
-static int __init ipack_init(void)
-{
-	ida_init(&ipack_ida);
-	return bus_register(&ipack_bus_type);
-}
-
-static void __exit ipack_exit(void)
-{
-	bus_unregister(&ipack_bus_type);
-	ida_destroy(&ipack_ida);
-}
-
-module_init(ipack_init);
-module_exit(ipack_exit);
-
-MODULE_AUTHOR("Samuel Iglesias Gonsalvez <siglesias@igalia.com>");
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("Industry-pack bus core");